diff --git a/openmc/tracks.py b/openmc/tracks.py
index 55a5fb060d..213a0867ec 100644
--- a/openmc/tracks.py
+++ b/openmc/tracks.py
@@ -272,7 +272,7 @@ class Tracks(list):
         Parameters
         ----------
         filename : path-like
-            Name of the VTK file to write.
+            Name of the VTP file to write.
 
         Returns
         -------